diff --git a/core/io/compression.cpp b/core/io/compression.cpp
index 62989b1d2c..5a8893d6e2 100644
--- a/core/io/compression.cpp
+++ b/core/io/compression.cpp
@@ -235,6 +235,7 @@ int Compression::decompress_dynamic(PoolVector<uint8_t> *p_dst, int p_max_dst_si
 			switch (ret) {
 				case Z_NEED_DICT:
 					ret = Z_DATA_ERROR;
+					FALLTHROUGH;
 				case Z_DATA_ERROR:
 				case Z_MEM_ERROR:
 				case Z_STREAM_ERROR:
diff --git a/core/math/convex_hull.cpp b/core/math/convex_hull.cpp
index 6c6df6a45e..1bfdb706bb 100644
--- a/core/math/convex_hull.cpp
+++ b/core/math/convex_hull.cpp
@@ -1046,8 +1046,8 @@ void ConvexHullInternal::compute_internal(int32_t p_start, int32_t p_end, Interm
 
 				return;
 			}
+			FALLTHROUGH;
 		}
-		// lint -fallthrough
 		case 1: {
 			Vertex *v = original_vertices[p_start];
 			v->edges = nullptr;
diff --git a/drivers/gles2/rasterizer_gles2.cpp b/drivers/gles2/rasterizer_gles2.cpp
index 4ab5b61002..2ea1b99acc 100644
--- a/drivers/gles2/rasterizer_gles2.cpp
+++ b/drivers/gles2/rasterizer_gles2.cpp
@@ -355,7 +355,7 @@ void RasterizerGLES2::set_boot_image(const Ref<Image> &p_image, const Color &p_c
 	canvas->canvas_begin();
 
 	RID texture = storage->texture_create();
-	storage->texture_allocate(texture, p_image->get_width(), p_image->get_height(), 0, p_image->get_format(), VS::TEXTURE_TYPE_2D, p_use_filter ? VS::TEXTURE_FLAG_FILTER : 0);
+	storage->texture_allocate(texture, p_image->get_width(), p_image->get_height(), 0, p_image->get_format(), VS::TEXTURE_TYPE_2D, p_use_filter ? (uint32_t)VS::TEXTURE_FLAG_FILTER : 0);
 	storage->texture_set_data(texture, p_image);
 
 	Rect2 imgrect(0, 0, p_image->get_width(), p_image->get_height());
diff --git a/drivers/gles2/shader_gles2.h b/drivers/gles2/shader_gles2.h
index 20c844c503..eb614d3d67 100644
--- a/drivers/gles2/shader_gles2.h
+++ b/drivers/gles2/shader_gles2.h
@@ -261,7 +261,7 @@ int ShaderGLES2::_get_uniform(int p_which) const {
 
 void ShaderGLES2::_set_conditional(int p_which, bool p_value) {
 	ERR_FAIL_INDEX(p_which, conditional_count);
-	ERR_FAIL_INDEX(static_cast<unsigned int>(p_which), sizeof(new_conditional_version.version) * 8);
+	ERR_FAIL_INDEX(p_which, (int)sizeof(new_conditional_version.version) * 8);
 
 	if (p_value) {
 		new_conditional_version.version |= (uint64_t(1) << p_which);
diff --git a/drivers/gles3/rasterizer_gles3.cpp b/drivers/gles3/rasterizer_gles3.cpp
index 447c3382a2..6789d46f74 100644
--- a/drivers/gles3/rasterizer_gles3.cpp
+++ b/drivers/gles3/rasterizer_gles3.cpp
@@ -289,7 +289,7 @@ void RasterizerGLES3::set_boot_image(const Ref<Image> &p_image, const Color &p_c
 	canvas->canvas_begin();
 
 	RID texture = storage->texture_create();
-	storage->texture_allocate(texture, p_image->get_width(), p_image->get_height(), 0, p_image->get_format(), VS::TEXTURE_TYPE_2D, p_use_filter ? VS::TEXTURE_FLAG_FILTER : 0);
+	storage->texture_allocate(texture, p_image->get_width(), p_image->get_height(), 0, p_image->get_format(), VS::TEXTURE_TYPE_2D, p_use_filter ? (uint32_t)VS::TEXTURE_FLAG_FILTER : 0);
 	storage->texture_set_data(texture, p_image);
 
 	Rect2 imgrect(0, 0, p_image->get_width(), p_image->get_height());